System Administrator Resume Example

System administrators keep an organization's servers, identities and backups working, and their resumes are read for proof of exactly that. Name the environment size, the platforms and the outages that did not happen, and you are ahead of most applicants.

The Sample resume below is for a systems administrator with six years across an orthopedic practice group, a school district and a trucking company. The environments are described by user counts, server counts and sites, and each bullet ends with a consequence: a migration finished on a weekend, a ransomware attempt contained, a patching backlog cleared. Certifications sit near the top because postings filter on them.

Tune the page to the posting's stack. A Windows shop wants Active Directory, Group Policy, Microsoft 365 and Intune; a Linux shop wants distributions, configuration management and scripting; a hybrid environment wants Azure or AWS alongside on-premises virtualization. Mention the ticketing tool and the backup product by name. The network engineer example covers the adjacent specialty many sysadmins share duties with, the IT manager example shows the next step up, and the Ledger template fits a certifications-heavy technical page.

Updated . The person and employers in this Sample resume are fictional.

System Administrator sample resume

Derek Sandquist

Systems Administrator, Windows Server and Microsoft 365

Phoenix, AZderek.sandquist@example.com(602) 555-0183

Summary

Systems administrator with six years of experience running Windows Server, VMware, Active Directory and Microsoft 365 environments for organizations of 400 to 3,000 users across multiple sites. Consolidated 60 aging virtual machines onto a new cluster with no user-facing downtime and brought monthly patch compliance from about 60 percent to above 98. Steady during incidents and thorough about documentation.

Experience

Systems Administrator, Riverbend Orthopedic Partners

– Present

Phoenix, AZ

  • Administer 48 Windows and Linux servers on a three-host VMware cluster, Active Directory and Microsoft 365 for 650 clinicians and staff across nine clinics and a surgery center.
  • Migrated the imaging archive and file services to new storage over two weekends with no lost data and no clinic downtime on the following business days.
  • Rebuilt the backup design with immutable offsite copies and quarterly restore tests, after inheriting a system that had never been restored from.
  • Contained a phishing-driven account compromise within forty minutes by revoking sessions and enforcing conditional access, with no data leaving the network.
Systems Administrator, Saguaro Flats Unified School District

–

Mesa, AZ

  • Supported 3,000 students and 400 staff across eleven schools, managing 60 servers, Group Policy and 4,000 devices through Intune and Google Admin.
  • Consolidated 60 virtual machines from three end-of-life hosts onto a new cluster during a summer break, retiring about $20,000 in annual maintenance contracts.
  • Automated account provisioning from the student information system with PowerShell, ending a two-week backlog at the start of each school year.
IT Support Specialist, Whitmore Freight Lines

–

Tempe, AZ

  • Resolved about 40 tickets a week for 400 office and terminal users and handled server monitoring on a rotating basis.
  • Raised monthly patch compliance on workstations from about 60 percent to above 98 by fixing update policies and chasing offline machines.
  • Wrote the department's first onboarding checklist so new drivers had working accounts and devices on their first day.

Education

Associate of Applied Science in Network and Systems Administration

Arizona Mesa Technical College, Mesa, AZ

Skills

  • Windows Server 2016-2022
  • Active Directory and Group Policy
  • Microsoft 365 and Entra ID
  • VMware vSphere
  • Linux (Ubuntu, RHEL)
  • PowerShell scripting
  • Intune and endpoint management
  • Veeam backup and recovery
  • Conditional access and MFA
  • Patch management
  • Storage and file services
  • Monitoring (PRTG)
  • ServiceNow ticketing

Certifications

  • Microsoft 365 Certified: Endpoint Administrator Associate, Microsoft,
  • CompTIA Server+, CompTIA,
  • CompTIA Security+, CompTIA,

Start yours from this example

Bring your own resume or start blank, then tailor it to each posting in about two minutes.

Use this example

Templates for the system administrator resume

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How the resume changes with experience

The same system administrator resume, written at three levels: a summary and three bullets for each.

Entry level

Zero to two years, or a first role in the title

Junior systems administrator with an associate degree, CompTIA A+ and Network+, and eighteen months on a help desk where I took on server patching and user provisioning.

  • Handle Active Directory accounts, group membership and workstation imaging for 200 users at one location.
  • Cut new-hire setup time from two days to a morning by building a standard image and a PowerShell script for account creation.
  • Asked to take over monthly server patching from the departing administrator and kept the schedule without a missed cycle.

Mid level

Three to seven years, owns a process or a workload

Systems administrator with five years of experience running a hybrid Windows and Azure environment for a 700-employee professional services firm.

  • Own 35 servers, Active Directory, Microsoft 365 and Azure resources for four offices.
  • Passed the firm's first external security assessment with no critical findings after a year of hardening work.
  • Decided to keep file services on-premises for one office with poor connectivity rather than force a cloud migration that would have frustrated users.

Senior

Eight years or more, leads people, budgets or programs

Senior systems administrator with twelve years of experience designing infrastructure, leading migrations and mentoring administrators for a 5,000-user organization.

  • Lead the infrastructure team of five responsible for 300 servers, two data centers and a growing Azure footprint.
  • Directed the Exchange to Exchange Online migration for 5,000 mailboxes over three months with no data loss.
  • Set the standard that no change ships without a rollback plan, and unplanned outages from changes dropped to near zero.

Skills to put on the system administrator resume

Hard skills

Windows Server and Active Directory
Most business environments run on them, and a posting that names them expects you to manage users, policy and authentication from day one.
Virtualization
VMware or Hyper-V is where the servers actually live, and cluster sizes you ran show the scale you are comfortable with.
Microsoft 365 or Google Workspace administration
Identity and email have moved to the cloud, and administrators who can secure them with MFA and conditional access are in demand.
Backup and disaster recovery
A tested restore is the single most important thing a sysadmin owns, and interviewers ask when you last ran one.
Scripting in PowerShell or Bash
Automation separates administrators who scale from those who click through the same task every day, and a script that saved hours is a strong bullet.
Endpoint and patch management
Patch compliance numbers are easy to verify and directly tied to security, so employers treat them as a proxy for diligence.
Linux administration
Even Windows-centered shops run Linux appliances and web servers, and comfort with both widens the roles you can take.
Security fundamentals
Sysadmins are the first line against ransomware, and a Security+ or a contained incident reassures managers.

Soft skills

Documentation habits
Runbooks and change records let others cover for you, and managers trust administrators who leave a trail.
Composure during outages
The way you handle a down server at seven in the morning defines how the business sees IT.
Plain-language communication
Users and executives need to know what broke and when it will be fixed, without the jargon.
Ownership of the boring work
Patching, backups and account cleanup are unglamorous and essential, and showing you do them consistently gets interviews.

Mistakes that cost system administrator interviews

  1. No environment size

    Managed servers and users tells a reader nothing. Give the number of servers, users, sites and devices for every role so the scale is obvious at a glance.

  2. Tasks instead of outcomes

    Performed patching and backups describes the job. Write what your patching achieved, how a migration went and what a restore test showed.

  3. Certifications buried at the bottom

    Postings often require a Microsoft, CompTIA or Red Hat credential, and screeners look for it first. Place certifications near the top or in the headline.

  4. Skipping security work

    MFA rollouts, hardening, phishing responses and audit remediation are now central to the role. If you have done any of them, they deserve their own bullets.

  5. An unfocused platform list

    Listing Windows, Linux, macOS, AWS, Azure and GCP equally reads as shallow. Lead with the stack in the posting and mention the rest briefly.

  6. Leaving out scripting

    Even a modest PowerShell script that automated provisioning shows you think about repeatable work. Without it, a resume looks like a help desk page with a bigger title.

Questions about the system administrator resume

Should a system administrator resume list every technology I have touched?

No. List the platforms you can administer confidently today, grouped by area, and show the rest in context within the bullets. A focused list matches postings better and holds up in interviews.

How do I show results when nothing broke?

Quiet environments are the result. Use uptime, patch compliance, backup test outcomes, ticket volumes and migrations completed without downtime, and give the numbers before and after your changes.

Which certifications matter for a sysadmin?

CompTIA Server+, Security+ and Network+ for foundations; Microsoft role-based certifications for Windows and Microsoft 365 shops; Red Hat or Linux Foundation credentials for Linux roles. Match the posting rather than collecting all of them.

How is a system administrator different from a DevOps engineer on a resume?

Sysadmins run servers, identity and endpoints for an organization; DevOps engineers build deployment pipelines and cloud infrastructure for software teams. If you want to move toward DevOps, emphasize scripting, cloud work and any infrastructure as code.

How long should a system administrator resume be?

One page through about six years of experience, two pages for senior administrators with several environments or team leadership. Keep older support roles to a couple of lines.

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